Machine for winding flat oblong coils



Aug. 9, 1949. w. c. SHAW MACHINE FOR WINDING FLAT OBLONG GOILS 5 Sheets-Sheet 1 Filed Sept. 6, 1947 m R N5 m H o@ R\ m5 V g m5 w a m x M R W T19 M 2% IITIIIMII'IE QME m mam w Madd 0 %4'm Aug. 9, 1949. w. c. SHAW MACHINE FOR WINDING FLAT OBLONG COILS Filed Spt. 6, 1947 5 Sheets-Sheet 2 Z5 INVENTOR.

WILLHRD Bi /aw BY 1949- w. c. SHAW I 2,478,716

MACHINE FOR WINDING FLAT OBLONG GOILS W. C. SHAW MACHINE FOR WINDING FLAT OBLONG COILS Aug. 9, 1949.

Filed Sept. 6, 1947 5 Sheets-Shet 4 INVENTOR.

WILLHRD C.5HF]W Aug. 9, 1949. w. c. SHAW MACHINE FOR WINDING FLAT OBLONG COILS 5 Sheets-Sheet 5 Filed Sept. 6, 1947 I INVENTOR. WJLLHRD C. 5Hnw I BY Patented Aug. 9, 1949 iMACHINE FOR WINDING FLAT OBLONG COILS Willard 0. Shaw, Anderson, Ind., assignor to Gen- "eral Motors Corporation, Detroit,"Mich., a corporation of Delaware Application september 6, 1957,.SeriaLNo. 7725560 4 Claims. 1

This invention relates to the manufacture of electrical forms and its object is to provide a machine for winding relatively heavy wire into a single flat layer. In general, this object is accomplished by a rotatable form against which the wire is pressed by a roller while the form rotates. There are four hydraulically operated devices respectively for clamping .the start end of the wire on the.form,.for urging the *wire-.engag- .ing roller against the wire under yielding pressupports .a step roller bearing 58.-the inner race sure during winding, for rotating the form and of which is engaged by a shoulder 590i the shaft for ejecting the woundcoil from the form after 55- Bearing 58 is closed by a tubular cover 6!) the clamping device has been released. attached to the shaft 55 by'screwsfil. A hearing Further objects and advantages of the present washer 52 .is located between the lower end of invention will be apparent from the following dethe members 55 and 51 and the gear .53. Screws scription, reference being had to the accompany- 63, threadedinto the hub of the-gear 53, tighten ing drawings, wherein a'preferred embodiment of the connection betweenthe ear'53 and the shaft the present invention isclearlyshown. 55. Gear 53 .is supported vertically by plate 54 In the drawings: which screws 55 attach .to the lower end of the Fig. 1 is a sideview of-the machine and in part 2 shaft 55. r adiagram of the hydraulic circuits. Y 'The upper end of shaft 55 is connected by Fig. 2 is a plan View. screws 10 (see Big. 6)- with the winding form it Fig. 3 is a fragment of the plan View drawn to having a plane surface 12 andan. oblong boss '53 a larger scale and showing details of the wireon which the. coilis wounch The boss i3 is proengaging roller and cooperating mechanism. 2 vided, as shown in.Fig..3,. with surfaces l5 and- 55 Fig. 4 is asectional view on line 4-5 of Fig. *3. against. which the startend of-the coil is clamped Fig. 5 is a fragmentary, sectional View on line before the winding starts. This start end is se- 5-5 of Fig. 2and-is drawn to a larger scale. cured. in position by a plate .80 having a down- Fig. 6 is a longitudinal, sectional View of parts wardly projecting. boss 81- which engages the of Fig. 5 which are there shown in side elevation. 39 start end of the-coil marked- Cs. (see Fig. 1.1). The Fig. 7 is a sectional .view on linel-l of Fig. 8. plate 185 is secured to a rod 8-2 which extends Fig. 8 is a sectional view on line 83 of Fig. 7. within the shaft 55 and is provided at its lower Fig. 9 is a sectional view on line 5'9 of Fig. 1. end with a clevis 53 connected by pin 85 with s. 10, 11 and .12- are diagrammatic views the upper end of a rod-85 extending through the 7 showing then'iode of operation of; the machine. shaft. and connected atits. lower end with-Va Referring to Fig. l, the frame work of the mabearing retainer which is threaded on the rod cltiine-comprisesl-egs 2'0 and Zl'which support side and is secured in adjusted position by lock nuts plates 22". Plates 2?; support: table plates 23 and 81 and 88. A-spri-ng -89 urges the rods 85 and 82 24. Legs 21 support atable. plate 25' having exdownwardly into el-ampirrgiposition. The retainer tension plates 25 and 2'1 fastened thereto and 40 85 holds astep bearing held in place by a ring 7 supported by braces 28 and 25, respectively. 5i secured by screwsilz to the. retainer 85. The Plate 23 supportsa winding cylinder 35 Whose lower race of bearing 95 is adapted to receive the piston, not shown, is connected with a rod 55 upper endof apis-ton'rod 55. (see Fig. 1-) attached connected by a bar 32' with arack bar 34 which to a piston Within a; cylinder 9.6 supported by plate is shown in Fig. 8 as being slidable against a fiat 45 9? having holes which receive screws 58 on the bearing plate 35 retained: by a frame 35: attached ends of rod teattachedate table2'4 in Fig. it. The by screws 31 to the bottom of. table plate 2.4. The plate 9"!- :is: located between pairs of nuts H35 rack 34 is supported. upon the frame 36 and. also threaded on trod. 98;v The vertical position of the upon a plate 38'loca-ted below abar 39-, barsSBand cylinder 56 and. of. the-upper endof rod: 955 is de- 39 being attached to: the table by screws 55. .The 5 termined by adjusting the nuts lliii'on the screws rack 4 sli o in contact with a bar 4 l which 98.v When. the pistomin'cylinder at rises, rod. 95 screws 52 attach to table 24.. engages the bearing. 593170 move the rods 85 and Referring to Fig, 7 table- 25 is welded toa tube 82 and the clamping. plate upwardly. As the 45 carrying bearings 45 within which a; shaft Al is plate Bil rises, it. moves'to'wazrd: the 'right' (Fig. 1') journaled. The upper. bearing is retained in the 55 due to. thee actiorrof aleaispring rm: attached by a rivet I02 to the rod 82, thereby moving the plate 80 toward the right so that the wound coil can be removed. When the rods 02 move down, the plate 80 moves down and toward the left. It moves toward the left due to the camming action between a stud I03 attached to the plate 80 and engaging an inclined surface I04 of the form 1 The side bars 22 (Fig. 1) support a cross bar H which supports a cylinder III, whose piston (not shown) is connected with a rod I I2 connected by a link H3 with a lever II4 pivoted at II5 on a bracket II6 attached to a plate II1. Plate II1 together with spacers I I8 are attached by screws II9 to the upper table 25. Plate H1 is integral with a sleeve I supporting a bearing I 2| for the upper portion of shaft 55. The shaft 55 is surrounded by a ring I22 which is engaged by the right end of lever II4. When piston rod II2 moves down, lever I I4 moves counterclockwise and lifts the ring I22 (Fig. 6) and causes pins I23 resting thereon to move upwardly a stripper plate I24. Plate I24 has its upper surface normally flush with the surface 12 of the form H. A coil wound on the form extends over the upper surface of the plate I24. Therefore when plate I24 moves upwardly the wound coil is stripped from the form boss 13. When piston rod II2 moves up springs I25 operate to move the stripper I24 to normal position, thereby pressing down on pins I23 which press down on ring I22, thereby returning the parts to normal position.

Referring to Figs. 3, 4 and 5, the upper table 25 supports a plate I which is integral with a rod I3I providing a pivot for an arm or triangular plate I32 whose hub I33 has a bearing I34 on the rod I3I. The hub I33 is located between ring bearing I35 and end of extension I40, and is retained by washer I31 engaged by nut I38 threaded on the upper end of rod I3I. Arm I32, which is of general triangular formation as shown in Fig. 3, carries said extension I40 attached by screws MI and the arm I32 together with its extension I40 are attached by pins I42 to a sleeve I43 which surrounds a piston rod I44 attached to a piston within a cylinder I45 pivoted at I45a. The sleeve I43 is urged right by a spring I46 confined under compression between the sleeve I43 and nuts I41 threaded on the left end of rod I44. As shown in Fig. 2, the spring I46 is operative to urge the lever I32 clockwise so that a roller I50 supported thereby can engage the wire being wound upon the form. Roller I50 rotates on a pin roller bearing I5I journaled on a rod I52 attached to a block I53 which is supported by the arm I32 and which is retained by a plate I54 attached by screws I55 to the arm I32 and by screws I56 to the block I53. Block I53 supports a roller step bearing I51, the lower race of which engages the roller I50. The plate I54 is provided with an arcuate beveled surface I60 engaged by a frustro-conical roller I6! journaled on a pin I62 carried by block I63 attached to the table plate 25. Due to the cooperation between roller I6I and surface I60, upward thrust of the arm I32 during the winding operation is resisted.

Referring to Fig. 1, a motor driven pump I10 has an inlet I1I connected with an oil tank (not shown) and an outlet I12 connected by pipe I13 with a valve I14 controlled by a pedal I15 and controlling the flow of oil through pipe I16 or pipe I11 to cylinder 96 for operating the clamp plate 00. Pipe I12 is connected also by flow control valve I 80 with a pipe IBI connected with a manually operated valve I82 for controlling the flow of oil through one or the other of pipes I83 and I84 connected with the cylinder 30. Pipe I8I is connected also with a manually operated valve I85 which controls the flow of oil through one or the other of pipes I86 and I81 connected with the knock-out or ejection cylinder II I. Pipe I8I is connected through a check valve I90 with a manually operated valve I9I controlling the flow of oil through one or the other of pipes I92 and I93 which is shown in Fig. 2 and are connected with the cylinder I45. The manually operated valves I82, I85 and I9I may be mounted for convenient operation upon a plate I05 (Fig. 3) which is located above the arm I32 and is supported by brackets I96 attached to the table 25.

The table extension 28 supports a roll of paper ribbon 200 whichrotates on a pin 20 I. The ribbon represented by the line R passes between pressure pads 202 and 203 which keep a certain tension on the ribbon. As shown in Fig. 10, the end of the ribbon is located in the angle defined by the surfaces 14 and 15 of the form H. The material for the coil C is provided by a copper bar B having the coil end Cs (Figs. 6 and 11) preformed. The coil end Cs is placed against the ribbon R which is against the form surface 15. Then the clamp plate 80 is moved from the position shown in Fig. 10 to that shown in Fig. 11 in order to hold the material in position. While these parts are being located, the pressure fluid is applied to the right end of cylinder I45 so as to hold the roller I50 out of engagement with the form. After the parts have been positioned as shown in Fig. 11 then the roller I 50, represented by the dot-dash circle I50, is moved against the bar B. Then the pressure I fluid is applied'to the left end of cylinder 30.

thereby causing the rack 34 to move toward the right, thus causing counterclockwise rotation of the form 1| as shown in Figs. 10, 11 and 12 which results in winding the coil into about three turns as shown in Fig. 12.

The number of turns which can be wound on the form is determined by how far the rack 34 moves toward the right end. This movement is determined by a block 205 (see Fig. 1) which is received by an oblong opening 206 (Fig. 9) in the table 24. The block 205 carries cross pins 201 which rest upon the table 24. When the block 205 is positioned as shown, the rack 34 will have the shortest stroke. If it is inverted so that the rack will engage the surface 208 thereof, the rack would have a longer stroke. The rack 34 can have a still longer stroke by removing the block 205 and allowing the rack to stop against a screw 209 threaded through a lug 2I0 attached to the bottom of the table 24.

During the winding of a coil, the bar B, which is located upon table extension 21, can whip back and forth between the pair of rollers 2i I and 2I2 secured to the top of said extension.

The operating sequence is as follows: After winding a coil, operate valve I9I to cause roller I50 to move away from coil. Depress pedal I15 to cause valve I14 to lift the clamp plate 80. Operate valve I05 to eject the wound coil. Operate valve I05 to retract the ejector. Operate valve I82 to cause left movement of rack 34 and clockwise rotation of form I1I to start position. Place end of ribbon R in angle formed by surfaces 14, 15 of form 1|. Place end Cs of wire B against ribbon R against form. Release pedal I15 to cause valve to effect movement of plate 00 into clamping position. Operate valve I0! to cause roller I50 to engage wire B. Operate valve I82 to cause rack 34 to move right to effect counterclockwise rotation of the form H to eflect winding the wire B upon the form.

While the emodiment of the present invention as herein disclosed, constitutes a preferred. form, it is to be understood that other forms might be adopted, all coming within the scope of the claims which follow.

What is claimed is as follows:

1. A machine for winding a flat, obong coil of wire comprising a winding form having a plane surface and an oblong boss extending therefrom, means for rotating the form, a member rotatable with the form and engageable with the start end of the wire to clamp it against the plane surface of the form, means for yieldably urging the wire toward the oblong boss of the form during winding, means for eiiecting movement of said member away from the side of the wound coi1 and also toward the axis of rotation of the form, and means for stripping the coil from the form after the member has been so moved.

2. .A machine according to claim 1 in which the means for rotating the form includes a tubular shaft carrying the form and in which the means for moving the wire securing member com prises a rod extending through the shaft, and attached to said member, a spring for urging the rod in the direction for advancing the member toward the wire, a device for moving the rod in the direction to retract the member from the wire, a spring for urging the member in a, direction toward the axis of rotation of the form when the member is moved away from the wire, and cam and cam follower elements, one provided by the form and the other by the member and cooperating, as the member is moving toward the form, to cause said member to move away from the axis of rotation of the form.

3'. A machine for winding a flat, oblong coil of wire comprising a winding form having a plane surface and an oblong boss extending therefrom, a rotatable shaft carrying the form, a rack,

gearing connecting the rack and the shaft, fluid pressure means for moving the rack in one direction to wind wire upon the form and for moving the rack in the opposite direction to restore the form to its starting position, an adjustable stop for variably limiting movement of the rack.

in the first mentioned direction in accordance with the amount of wire to be wound upon the form, means rotatable with the form for secur= ing the start end of the wire to the form, and means for yiedably urging the wire toward the oblong boss of the form during winding.

4. A machine for winding a fiat, oblong coil of wire comprising a winding form having a plane surface and an oblong boss extending therefrom, means for rotating the form, means for yieldably urging the wire toward the oblong boss of the form during winding, a member rotatable with the form and engageable with the start end of the wire to clamp it against the plane surface of the form, means for efi-Tecting movement of said member away from the side of the wound coil and also toward the axis of rotation of the form, a plate rotatable with the form and having a plane surface normally flush with the plane surface of the form, said surfaces being contacted by the wound coil, and means for moving the plate axially tostrip the coil from the boss of the form.

WILLARD C. SHAW.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 206,197 Presser July 23, 1873 350,612 Anderson Oct. 12, 1886 404,213 Millett May 28, 1889 749,013 Anderson Jan. 5, 1904 1,503,272 Lewellyn July 29, 1924 2,357,812 Duer Sept. 12, 1944 

